European radiology
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Comparative Study Observational Study
Analysis of normal-appearing white matter of multiple sclerosis by tensor-based two-compartment model of water diffusion.
To compare the significance of the two-compartment model, considering diffusional anisotropy with conventional diffusion analyzing methods regarding the detection of occult changes in normal-appearing white matter (NAWM) of multiple sclerosis (MS). ⋯ • Water diffusion was compared between the controls and multiple sclerosis patients. • A two-compartment model, considering diffusional anisotropy was selected for water diffusion analysis. • Axial and radial diffusion of fast and slow diffusion components were evaluated. • A new method was developed to obtain the metrics stably. • The metrics indicated high detectability of slight differences between the groups.
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To investigate the effect of a radiation reduction program on total dose, fluoroscopy dose per second corrected for body habitus and degree of collimation in left varicocele embolizations (LVE). ⋯ • Left varicocele embolization can be performed with very low radiation doses. • The most effective real time radiation reduction measure is collimation. • There is a learning curve to achieving optimal collimation.
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Comparative Study
SHINKEI--a novel 3D isotropic MR neurography technique: technical advantages over 3DIRTSE-based imaging.
Technical assessment of SHINKEI pulse sequence and conventional 3DIRTSE for LS plexus MR neurography. ⋯ • SHINKEI provides homogeneous and superior fat suppression, shown by higher nerve and muscle-to-fat ratios. • SHINKEI shows better nerve signal-to-noise and contrast-to-noise ratios than 3DIRTSE. • SHINKEI enables nerve-selective images with increased conspicuity of smaller LS plexus branches. • SHINKEI should be considered in routine MR neurography of the LS plexus.
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To investigate whether the apparent diffusion coefficient (ADC) from diffusion-weighted magnetic resonance imaging (DW-MRI) could help improve the prediction of insignificant prostate cancer in candidates for active surveillance (AS). ⋯ • ADC from DW-MRI can help assess prostate cancer aggressiveness in potential AS candidates. • There was a closed correlation between higher ADC values and insignificant prostate cancer. • The absence of lesions on DWI/DWI can help select potential AS candidates.